"When Dallas challenged the Eagles' third-quarter go-ahead touchdown last night, the Eagles had a pretty good idea the Donovan McNabb-to-Brent Celek score would not be overturned.Why?Because last year the Eagles watched as a Giants challenge reversed a penalty that ruled New York quarterback Eli Manning had crossed the line of scrimmage before releasing a pass. The play was a crucial one in the Giants' victory.This time, it was Cowboys coach Wade Phillips who tossed the red hankie, challenging McNabb's 11-yard touchdown pass to Celek.The play was similar to Manning's throw because most of McNabb's body had indeed passed the line. But as that play a year ago showed, the quarterback's body must be completely over the line of scrimmage to be a foul.Last night, McNabb's foot was still on that invisible line, as televisions replays illustrated. And the touchdown, which gave the Eagles a 13-6 lead, stood as called on the field."